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67 lines
2.3 KiB
Markdown
67 lines
2.3 KiB
Markdown
---
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title: 'Override the Default Configs | Dovecot'
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---
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## Add Configuration
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The Dovecot default configuration can easily be extended providing a `docker-data/dms/config/dovecot.cf` file.
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[Dovecot documentation](https://doc.dovecot.org/configuration_manual/) remains the best place to find configuration options.
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Your DMS folder structure should look like this example:
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```txt
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├── docker-data/dms/config
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│ ├── dovecot.cf
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│ ├── postfix-accounts.cf
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│ └── postfix-virtual.cf
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├── docker-compose.yml
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└── README.md
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```
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One common option to change is the maximum number of connections per user:
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```cf
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mail_max_userip_connections = 100
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```
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Another important option is the `default_process_limit` (defaults to `100`). If high-security mode is enabled you'll need to make sure this count is higher than the maximum number of users that can be logged in simultaneously.
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This limit is quickly reached if users connect to DMS with multiple end devices.
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## Override Configuration
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For major configuration changes it’s best to override the dovecot configuration files. For each configuration file you want to override, add a list entry under the `volumes` key.
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```yaml
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services:
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mailserver:
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volumes:
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- ./docker-data/dms/mail-data/:/var/mail/
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- ./docker-data/dms/config/dovecot/10-master.conf:/etc/dovecot/conf.d/10-master.conf
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```
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You will first need to obtain the configuration from the running container (_where `mailserver` is the container name_):
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```sh
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mkdir -p ./docker-data/dms/config/dovecot
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docker cp mailserver:/etc/dovecot/conf.d/10-master.conf ./docker-data/dms/config/dovecot/10-master.conf
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```
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## Debugging
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To debug your dovecot configuration you can use:
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- This command: `./setup.sh debug login doveconf | grep <some-keyword>`
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- Or: `docker exec -it mailserver doveconf | grep <some-keyword>`
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!!! note
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[`setup.sh`][github-file-setupsh] is included in the DMS repository. Make sure to use the one matching your image version release.
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The file `docker-data/dms/config/dovecot.cf` is copied internally to `/etc/dovecot/local.conf`. To verify the file content, run:
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```sh
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docker exec -it mailserver cat /etc/dovecot/local.conf
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```
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[github-file-setupsh]: https://github.com/docker-mailserver/docker-mailserver/blob/master/setup.sh
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